Advanced book chest

Do you find that you get more when playing through the level or when rushing?
Is there any area you feel you get more than others?

I haven't had 1 in almost a month now

For me at least I feel I see them on the wheel more when I actually do the level. This is most likely nothing but coincidence or my own perception

Your not alone /: I've been looking for earth ones for almost a week and ghost ones for a month and haven't got anything at all it's luck really and I have none obviously lol

I usually do 4 or 5 expert modes and the rest vet modes. If i dont get an ABC in 4 experts or see 1 I do the rest in vet mode. I can usually get 2-3 IBC and d/e them. At least this way I can buy something at a point.

As far as Rush vs Normal. I dont seee a difference in drop rates.